I bought a pair of 2010 UPZ RC10 boots form Dan Yoja http://www.upzboots.com/ last week. Dan was able to provide me with real-world advice and experience in my buying decision. He answered emails very quickly and they were on my doorstep within 2 days of ordering.
The boots themselves are 26MP and are translucent cream. They were very hard to get into the first time and had me sweating. Once I figured out that the last toe buckle was still hanging on and release it fully, they went right on with a good push. All is good now and they slip on with ease after a few hours of wearing them on the carpet.
I am going to get some different footbeds for them from the start, but overall, they fit very nice. No real pinch points, just one on my left arch, but the footbeds should help fix that. I also walk on the outside edges of my feet so adjusting the canting should help. A boot fitter will be found if this doesn't fix it.
I also had to move the to upper clasps over one hole so that I could get the boots done up around my calves. This was easy with the included tools.
I also bought the SnowPro Race LTD stepin bindings, which come with the heels and hardware. T-nuts and bolts are included with the heels and took about 30 minutes total to install. I will post about them in the bindings section.
I will have to wait until the winter to ride test them, but I couldn't pass up the deal that Dan has right now (or will have come May 1st) and got fully outfitted.
Prior to t-nuts
Drilled out with 19/64" drill bit (7.5mm)
Heel and hardware comparison
25.5/26.0/26.5 Shell sizing
Included tools and liner pads
How they look mounted